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Four New Luminescent Metal–Organic Frameworks as Multifunctional Sensors for Detecting Fe3+, Cr2O72– and Nitromethane

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journal contribution
posted on 2020-02-21, 22:29 authored by Fa-Yuan Ge, Guo-Hao Sun, Lei Meng, Shuang-Shuang Ren, He-Gen Zheng
Four new metal–organic frameworks, {[Zn­(L)­(dcdps)]}n (1), {Zn­(L)­(bdc)}n (2), {[Cd­(L)­(oba)]·0.5DMF}n (3), and {[Cd­(L)­(bdc)·2H2O]·2DMF}n (4) [L = 4,4′-(2,5-bis­(methylthio)-1,4-phenylene)­dipyridine; H2dcdps = 4,4′-sulfonyldibenzoic acid, H2bdc = 1,4-dicarboxybenzene, H2oba = 4,4′-oxybisbenzoic acid] have been hydrothermally synthesized and characterized by single crystal X-ray diffraction, infrared spectroscopy, powder X-ray diffraction, element analysis, and thermogravimetry measurements. Their application in detecting ions and organic molecules was explored, and the results show that they are all excellent luminescent probes for Fe3+, Cr2O72–, and nitromethane. The mechanisms of quenching were also studied in detail.

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